CVE-2008-1393: Plone CMS

High severity, CVSS 10.0. EPSS: 2.9% chance of exploitation in the next 30 days.

Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the __ac cookie for the admin account, which makes it easier for remote attackers to obtain administrative privileges by sniffing the network.

Affected products

• Plone Plone CMS: up to and including 3; up to and including 3.0.5

Published 2008-03-20. Last modified 2026-06-16.